Thermostat



FIG. 1 is a top, front and left side perspective view of a thermostat showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a front elevational view of another embodiment of our new design of FIGS. 1-5; and

FIG. 6 is a top, front and left side perspective view thereof, the rear of both embodiments, not shown, is substantially plain and unornamented. 

The ornamental design for a thermostat, as shown and described. 